package com.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharacterEncoding implements Filter{

	String encoding = "";
	
	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		if(!"".equals(encoding)){
			request.setCharacterEncoding(encoding);
			response.setCharacterEncoding(encoding);
			response.setContentType("text/html;charset=" + encoding);
		} else {
			request.setCharacterEncoding("UTF-8");
			response.setCharacterEncoding("UTF-8");
			response.setContentType("text/html;charset=UTF-8");
		}
		chain.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig config) throws ServletException {
		encoding = config.getInitParameter("encoding");
	}
}
